diff --git a/conf/layer.conf b/conf/layer.conf
index b45a309..97cf46b 100644
--- a/conf/layer.conf
+++ b/conf/layer.conf
@@ -11,6 +11,8 @@ BBFILE_PRIORITY_raspberrypi = "9"
 
 LAYERSERIES_COMPAT_raspberrypi = "dunfell"
 
+LAYERDEPENDS_raspberrypi = "core"
+
 # Additional license directories.
 LICENSE_PATH += "${LAYERDIR}/files/custom-licenses"
 
diff --git a/recipes-bsp/bootfiles/rpi-config_git.bb b/recipes-bsp/bootfiles/rpi-config_git.bb
index 2541e9e..ce7ba75 100644
--- a/recipes-bsp/bootfiles/rpi-config_git.bb
+++ b/recipes-bsp/bootfiles/rpi-config_git.bb
@@ -8,7 +8,7 @@ LIC_FILES_CHKSUM = "file://${COMMON_LICENSE_DIR}/MIT;md5=0835ade698e0bcf8506ecda
 COMPATIBLE_MACHINE = "^rpi$"
 
 SRCREV = "648ffc470824c43eb0d16c485f4c24816b32cd6f"
-SRC_URI = "git://github.com/Evilpaul/RPi-config.git;protocol=git;branch=master \
+SRC_URI = "git://github.com/Evilpaul/RPi-config.git;protocol=https;branch=master \
           "
 
 S = "${WORKDIR}/git"
diff --git a/recipes-bsp/common/raspberrypi-firmware.inc b/recipes-bsp/common/raspberrypi-firmware.inc
index 32cc480..891bd1a 100644
--- a/recipes-bsp/common/raspberrypi-firmware.inc
+++ b/recipes-bsp/common/raspberrypi-firmware.inc
@@ -1,9 +1,9 @@
-RPIFW_DATE ?= "20201002"
-SRCREV ?= "11e3c314bc2b64f7d862bac00ff3d9f42f3c5a50"
+RPIFW_DATE ?= "20210527"
+SRCREV ?= "1eb8921ae7158249894f89e8bb6c4bfb04ec7377"
 RPIFW_SRC_URI ?= "https://github.com/raspberrypi/firmware/archive/${SRCREV}.tar.gz;downloadfilename=raspberrypi-firmware-${SRCREV}.tar.gz"
 RPIFW_S ?= "${WORKDIR}/firmware-${SRCREV}"
 
 SRC_URI = "${RPIFW_SRC_URI}"
-SRC_URI[sha256sum] = "b8c9f5a3e987f418f11526cbf59f6a6c8103e8f5e94bccffb9ef3fd7ae834f98"
+SRC_URI[sha256sum] = "32fb5cc72703247622839c3cb4df2f369f91d2185770df867ac9758283bf5380"
 
 PV = "${RPIFW_DATE}"
diff --git a/recipes-connectivity/pi-bluetooth/pi-bluetooth_0.1.12.bb b/recipes-connectivity/pi-bluetooth/pi-bluetooth_0.1.12.bb
index ccf714b..6ad81c4 100644
--- a/recipes-connectivity/pi-bluetooth/pi-bluetooth_0.1.12.bb
+++ b/recipes-connectivity/pi-bluetooth/pi-bluetooth_0.1.12.bb
@@ -7,7 +7,7 @@ LIC_FILES_CHKSUM = "\
 "
 
 SRC_URI = "\
-    git://github.com/RPi-Distro/pi-bluetooth \
+    git://github.com/RPi-Distro/pi-bluetooth;branch=master;protocol=https \
     file://0001-bthelper-correct-path-for-hciconfig-under-Yocto.patch \
 "
 SRCREV = "cbdbcb66bcc5b9af05f1a9fffe2254c872bb0ace"
diff --git a/recipes-core/udev/udev-rules-rpi/99-com.rules b/recipes-core/udev/udev-rules-rpi/99-com.rules
index 6bf019b..ddd1e17 100644
--- a/recipes-core/udev/udev-rules-rpi/99-com.rules
+++ b/recipes-core/udev/udev-rules-rpi/99-com.rules
@@ -1,8 +1,8 @@
 KERNEL=="ttyAMA[01]", PROGRAM="/bin/sh -c '\
 	ALIASES=/proc/device-tree/aliases; \
-	if cmp -s $ALIASES/uart0 $ALIASES/serial0; then \
+	if cmp -s $$ALIASES/uart0 $$ALIASES/serial0; then \
 		echo 0;\
-	elif cmp -s $ALIASES/uart0 $ALIASES/serial1; then \
+	elif cmp -s $$ALIASES/uart0 $$ALIASES/serial1; then \
 		echo 1; \
 	else \
 		exit 1; \
@@ -11,9 +11,9 @@ KERNEL=="ttyAMA[01]", PROGRAM="/bin/sh -c '\
 
 KERNEL=="ttyS0", PROGRAM="/bin/sh -c '\
 	ALIASES=/proc/device-tree/aliases; \
-	if cmp -s $ALIASES/uart1 $ALIASES/serial0; then \
+	if cmp -s $$ALIASES/uart1 $$ALIASES/serial0; then \
 		echo 0; \
-	elif cmp -s $ALIASES/uart1 $ALIASES/serial1; then \
+	elif cmp -s $$ALIASES/uart1 $$ALIASES/serial1; then \
 		echo 1; \
 	else \
 		exit 1; \
diff --git a/recipes-devtools/pi-blaster/pi-blaster_git.bb b/recipes-devtools/pi-blaster/pi-blaster_git.bb
index fdaf16c..4b2d1ba 100644
--- a/recipes-devtools/pi-blaster/pi-blaster_git.bb
+++ b/recipes-devtools/pi-blaster/pi-blaster_git.bb
@@ -4,7 +4,7 @@ SECTION = "devel/libs"
 LICENSE = "MIT"
 LIC_FILES_CHKSUM = "file://README.md;beginline=268;endline=292;md5=86d10e4bcf4b4014d306dde7c1d2a80d"
 
-SRC_URI = "git://github.com/sarfata/pi-blaster \
+SRC_URI = "git://github.com/sarfata/pi-blaster;branch=master;protocol=https \
            file://remove-initscript-lsb-dependency.patch \
            "
 
diff --git a/recipes-devtools/python/python3-rtimu_git.bb b/recipes-devtools/python/python3-rtimu_git.bb
index 4f13a38..c9f1cec 100644
--- a/recipes-devtools/python/python3-rtimu_git.bb
+++ b/recipes-devtools/python/python3-rtimu_git.bb
@@ -5,7 +5,7 @@ SECTION = "devel/python"
 LICENSE = "MIT"
 LIC_FILES_CHKSUM = "file://../../LICENSE;md5=96cdecb41125f498958e09b72faf318e"
 
-SRC_URI = "git://github.com/RPi-Distro/RTIMULib.git;protocol=http;branch=master \
+SRC_URI = "git://github.com/RPi-Distro/RTIMULib.git;protocol=http;branch=master;protocol=https \
            file://0001-include-asm-ioctl.h-for-ioctl-define.patch;patchdir=../.. \
           "
 SRCREV = "b949681af69b45f0f7f4bb53b6770037b5b02178"
diff --git a/recipes-graphics/libva/libva_%.bbappend b/recipes-graphics/libva/libva_%.bbappend
new file mode 100644
index 0000000..56ff421
--- /dev/null
+++ b/recipes-graphics/libva/libva_%.bbappend
@@ -0,0 +1,3 @@
+# when using userland graphic KHR/khrplatform.h is provided by userland but virtual/libgl is provided by mesa-gl where
+# we explicitly delete KHR/khrplatform.h since its already coming from userland package
+DEPENDS_append_rpi = " ${@bb.utils.contains('MACHINE_FEATURES', 'vc4graphics', '', 'userland', d)}"
diff --git a/recipes-graphics/userland/userland_git.bb b/recipes-graphics/userland/userland_git.bb
index 1138da8..5378cde 100644
--- a/recipes-graphics/userland/userland_git.bb
+++ b/recipes-graphics/userland/userland_git.bb
@@ -20,7 +20,7 @@ SRCREV = "188d3bfe4a0ac36b119a2cee35a6be8d0c68e09e"
 PV = "20200624"
 
 SRC_URI = "\
-    git://github.com/${SRCFORK}/userland.git;protocol=git;branch=${SRCBRANCH} \
+    git://github.com/${SRCFORK}/userland.git;protocol=https;branch=${SRCBRANCH} \
     file://0001-Allow-applications-to-set-next-resource-handle.patch \
     file://0002-wayland-Add-support-for-the-Wayland-winsys.patch \
     file://0003-wayland-Add-Wayland-example.patch \
diff --git a/recipes-kernel/bluez-firmware-rpidistro/bluez-firmware-rpidistro_git.bb b/recipes-kernel/bluez-firmware-rpidistro/bluez-firmware-rpidistro_git.bb
index 310d2f8..260aeb9 100644
--- a/recipes-kernel/bluez-firmware-rpidistro/bluez-firmware-rpidistro_git.bb
+++ b/recipes-kernel/bluez-firmware-rpidistro/bluez-firmware-rpidistro_git.bb
@@ -23,7 +23,7 @@ LIC_FILES_CHKSUM = "\
 # so that the license files will be copied from fetched source
 NO_GENERIC_LICENSE[Firmware-cypress-rpidistro] = "LICENCE.cypress-rpidistro"
 
-SRC_URI = "git://github.com/RPi-Distro/bluez-firmware"
+SRC_URI = "git://github.com/RPi-Distro/bluez-firmware;branch=master;protocol=https"
 SRCREV = "96eefffcccc725425fd83be5e0704a5c32b79e54"
 PV = "0.0+git${SRCPV}"
 
diff --git a/recipes-kernel/linux-firmware-rpidistro/linux-firmware-rpidistro_git.bb b/recipes-kernel/linux-firmware-rpidistro/linux-firmware-rpidistro_git.bb
index 99afde8..954887d 100644
--- a/recipes-kernel/linux-firmware-rpidistro/linux-firmware-rpidistro_git.bb
+++ b/recipes-kernel/linux-firmware-rpidistro/linux-firmware-rpidistro_git.bb
@@ -33,7 +33,7 @@ LIC_FILES_CHKSUM = "\
 NO_GENERIC_LICENSE[Firmware-broadcom_bcm43xx-rpidistro] = "LICENCE.broadcom_bcm43xx"
 NO_GENERIC_LICENSE[WHENCE] = "WHENCE"
 
-SRC_URI = "git://github.com/RPi-Distro/firmware-nonfree"
+SRC_URI = "git://github.com/RPi-Distro/firmware-nonfree;branch=buster;protocol=https"
 
 SRCREV = "98e815735e2c805d65994ccc608f399595b74438"
 PV = "20190114-1+rpt8"
diff --git a/recipes-kernel/linux/linux-raspberrypi-dev.bb b/recipes-kernel/linux/linux-raspberrypi-dev.bb
index bb4a64e..d6b0eec 100644
--- a/recipes-kernel/linux/linux-raspberrypi-dev.bb
+++ b/recipes-kernel/linux/linux-raspberrypi-dev.bb
@@ -5,19 +5,33 @@ python __anonymous() {
         raise bb.parse.SkipRecipe(msg)
 }
 
-FILESEXTRAPATHS_prepend := "${THISDIR}/linux-raspberrypi:"
+LINUX_VERSION ?= "5.10.y"
+LINUX_RPI_BRANCH ?= "rpi-5.10.y"
+LINUX_RPI_KMETA_BRANCH ?= "yocto-5.10"
 
-LINUX_VERSION ?= "4.19"
-LINUX_RPI_BRANCH ?= "rpi-4.19.y"
+# Set default SRCREVs. Both the machine and meta SRCREVs are statically set
+# to the as in 5.10 recipe, and hence prevent network access during parsing. If
+# linux-yocto-dev is the preferred provider, they will be overridden to
+# AUTOREV in following anonymous python routine and resolved when the
+# variables are finalized.
+SRCREV_machine ?= '${@oe.utils.conditional("PREFERRED_PROVIDER_virtual/kernel", "linux-raspberrypi-dev", "${AUTOREV}", "89399e6e7e33d6260a954603ca03857df594ffd3", d)}'
+SRCREV_meta ?= '${@oe.utils.conditional("PREFERRED_PROVIDER_virtual/kernel", "linux-raspberrypi-dev", "${AUTOREV}", "a19886b00ea7d874fdd60d8e3435894bb16e6434", d)}'
+
+KMETA = "kernel-meta"
 
-SRCREV = "${AUTOREV}"
 SRC_URI = " \
-    git://github.com/raspberrypi/linux.git;protocol=git;branch=${LINUX_RPI_BRANCH} \
+    git://github.com/raspberrypi/linux.git;name=machine;branch=${LINUX_RPI_BRANCH};protocol=https \
+    git://git.yoctoproject.org/yocto-kernel-cache;type=kmeta;name=meta;branch=${LINUX_RPI_KMETA_BRANCH};destsuffix=${KMETA} \
+    file://powersave.cfg \
+    file://android-drivers.cfg \
     "
+
 require linux-raspberrypi.inc
 
+LIC_FILES_CHKSUM = "file://COPYING;md5=6bc538ed5bd9a7fc9398086aedcd7e46"
+
+KERNEL_EXTRA_ARGS += "DTC_FLAGS='-@ -H epapr'"
+
 # Disable version check so that we don't have to edit this recipe every time
 # upstream bumps the version
 KERNEL_VERSION_SANITY_SKIP = "1"
-
-LIC_FILES_CHKSUM = "file://COPYING;md5=bbea815ee2795b2f4230826c0c6b8814"
diff --git a/recipes-kernel/linux/linux-raspberrypi_5.4.bb b/recipes-kernel/linux/linux-raspberrypi_5.4.bb
index 4a7182f..f897f1b 100644
--- a/recipes-kernel/linux/linux-raspberrypi_5.4.bb
+++ b/recipes-kernel/linux/linux-raspberrypi_5.4.bb
@@ -1,5 +1,6 @@
 LINUX_VERSION ?= "5.4.72"
 LINUX_RPI_BRANCH ?= "rpi-5.4.y"
+LINUX_RPI_KMETA_BRANCH ?= "yocto-5.4"
 
 SRCREV_machine = "154de7bbd5844a824a635d4f9e3f773c15c6ce11"
 SRCREV_meta = "5d52d9eea95fa09d404053360c2351b2b91b323b"
diff --git a/recipes-kernel/linux/linux-raspberrypi_5.4.inc b/recipes-kernel/linux/linux-raspberrypi_5.4.inc
index 9e8934a..9ed3ae5 100644
--- a/recipes-kernel/linux/linux-raspberrypi_5.4.inc
+++ b/recipes-kernel/linux/linux-raspberrypi_5.4.inc
@@ -4,7 +4,7 @@ KMETA = "kernel-meta"
 
 SRC_URI = " \
     git://github.com/raspberrypi/linux.git;name=machine;branch=${LINUX_RPI_BRANCH} \
-    git://git.yoctoproject.org/yocto-kernel-cache;type=kmeta;name=meta;branch=yocto-5.4;destsuffix=${KMETA} \
+    git://git.yoctoproject.org/yocto-kernel-cache;type=kmeta;name=meta;branch=${LINUX_RPI_KMETA_BRANCH};destsuffix=${KMETA} \
     "
 SRC_URI_remove = "file://rpi-kernel-misc.cfg"
 
diff --git a/recipes-multimedia/omxplayer/omxplayer_git.bb b/recipes-multimedia/omxplayer/omxplayer_git.bb
index 55e5a1c..82706a4 100644
--- a/recipes-multimedia/omxplayer/omxplayer_git.bb
+++ b/recipes-multimedia/omxplayer/omxplayer_git.bb
@@ -22,8 +22,8 @@ SRCREV_default = "f543a0d0e707ab56415f17b0ca6d397394ee8b63"
 # This SRCREV corresponds to the v4.0.3 release of ffmpeg.
 SRCREV_ffmpeg = "fcbd117df3077bad495e99e20f01cf93737bce76"
 
-SRC_URI = "git://github.com/popcornmix/omxplayer.git;protocol=git;branch=master \
-           git://github.com/FFmpeg/FFmpeg;branch=release/4.0;protocol=git;depth=1;name=ffmpeg;destsuffix=git/ffmpeg \
+SRC_URI = "git://github.com/popcornmix/omxplayer.git;protocol=https;branch=master \
+           git://github.com/FFmpeg/FFmpeg;branch=release/4.0;protocol=https;depth=1;name=ffmpeg;destsuffix=git/ffmpeg \
            file://0002-Libraries-and-headers-from-ffmpeg-are-installed-in-u.patch \
            file://0003-Remove-strip-step-in-Makefile.patch \
            file://0004-Add-FFMPEG_EXTRA_CFLAGS-and-FFMPEG_EXTRA_LDFLAGS.patch \